Shutter-worker



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Patented Sept. 30, A1890.

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E. T. KBENER.

y SHUTTBR WORKER. No. 437,603.

Patented Sept. 30, 1890.

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I UNITED STATES 1 PATENT' Ormea.

EDWIN T. KEENER, OF MOBERLY, MISSOURI.

SPECIFICATION forming part of Letters Patent No. 437,603, datedSeptember 30, 1890.

Application filed April Z3, 1890.

To all whom it 11i/cry concern: Be it known that I, EDWIN T. KEENER, ofMoberlly, in the county of Randolph and State of Missouri, have inventedanew and useful Improved Shutter-Vorker, of which the following is afull, clear, and exact description. My invention relates to an improveddevice for opening or closing Window shutters or blinds from within thebuilding without raising the windows, and has for its objects to providea simple and cheap device of the character named, whereby the shuttersof a window may be opened partly or entirely and held at any desiredpoint of open or closed adjustment.

To these ends my invention consists in the construction and combinationof parts, as is hereinafter described, and indicated in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding part-s in all the figures.

Figure l is a cross-section of awindow-subsill and a portion of awindow-sash in the easement that is broken, showing a shutter portionclosed and the improved shutterworker in position thereon. Fig. 2 is aplan view in section of a window-frame sash and shutter closed and theshutter-worker in position, taken on the line a: in Fig. 1, and in thesame view a closed and half-opened shutter is shown in dotted lines inconnection with the improved shutter-worker, this side of the view beingtaken on the line 2 2 in Fig. 1. Fig. 3 is an enlarged detached view inlongitudinal section of a knob for the shutter- Worker, showing meansfor adj ustably attaching the knob upon t-he rocking shaft thattransmits revoluble motion to the cam-head of the vshutter-worker. Fig.4. is an enlarged diagram illustrating the positions assumed by theworking parts of the device When the shutter is closed and half-opened,the outer side of the shutter being represented. Fig. 5 isv an enlargeddetached plan of the shutterworker, showing, the parts in thepositionsrepresented in Fig. 4. Fig. 6 is a plan view enlarged of theshutter-worker head and a shut` ter engaged and thrown completely open.

Fig. 7 is a side view of a modified form of .ing-knob handle 72..

Serial No. 349,073. (No model.)

, the cam-head and an engaging bracket-plate,

whichy is placed on the shutter and receives motion from the cam-head,whereby the shutter is moved Ion its hinges; and Fig. 8 isa plan insection of the parts shown in Fig. 7, taken on the line 8 8 in saidligure.

The preferred form for the shutter-working device is composed of acam-head C, shaped as a wheel segment-that is, semicircular-having aflattened band-like rim a, which is grad ually twisted from one cornerb, where the rim joins the transverse bar c, to the opposite corner d,thus converting the rim a into a spiral band of semicircular form. Thepitch 4ofthe twistgiven the rim a produces a halfturn of its edges fromb to d. 1 Consequently at the point e, which represents the crown of.the seinicircular arch of the camp-head, one-A fourth ofa completetwisting revolution has been given to the rim a, and its body at thislpoint is disposed in a plane which is at right angles to the plane ofthe end portions l) d of the rim. At the radial center of thehalf-circular rim a a hub-enlargement is produced on the cross-bar c,which is laterally and centrallyT perforated to receive a rocking shaftg, which is thus attached at a right angle tothe =cam-headC, that isaffixed on one end of the same.

The location given to the shutter-working device is such that when inposition the camhead may engage with a bracket-arm on the lower outeredge of the shutter or blind to be operated. To this end the shaft g isinserted in avproper orifice formed through the wall of the building atsuch a point as will permit the rocking shaft to be therein rocked andengage its cam-head C with the arm n, which will be described. Thelength of the. rocking shaft g is proportioned to the thickness of thewall A engaged and projection of the shutter B by its hinges, so thatwhen in place the shaft will extend through the wall on the inner sideof the same to receive an operat- As shown in Fig. 3, the

knob his longitudinally perforated and screwthreaded for its engagementwith the inner threaded end of the shaft g, a suitable grooved key-seatbeing produced in the knob and shaft body for the sliding introductionof the lockingkey t'. When the shaft g is introloo duced, a Washer lo isplaced over its inner end and the knob screwed upon the shaft untilend-play is taken up and the device held free to rotate. The key t' isthen inserted, and a sealing-screw m inserted in the Outer end of theknob, which will prevent a displacement of the key, so that the knob 71,will be secured to the shaft at any desired point.

As previously mentioned, the cam-head is engaged by an arm n, which armis constructed witha bifurcated end n', so that when in position itextends from the shutter B, so as to engage .its forked end n with theflattened rim a of the cam-head, the arm being integral with a platehaving screw-holes, whereby it can be attached upon the lower outercorner of a window shutter or blind or other suitable place thereon, thecenter of the forked end of the arm and of the cam-head beingin the samevertical plane with the axis of the hinges 0, as shown at y y in Fig. 1.

It will be evident that in use the partial rotation of the cam-head willremove it from ssA the position shown in Figs. l and 4, that representsthe shutter closed in the full lines of the drawing in both views, andby turning it to rock the corner d upwardly any degree of openadjustment can be afforded tO the shutter by reason of the twisting formof the rim a, and, further, that at any point the shutter is required toremain the adjustment of the shutter-worker will secure the shutter,dispensing with other fastenings.

` As shown in Fig. 6, a half-revolution of the cam-head will place itsrim ct above and carry the outer corner b into engagement with the armn, which movement will throw the shutter B entirely open, reversing theposition of the arm in regard to its engagement with the rim a of thecam-head.

The modified form given the rim of the cam-head (shown in Figs. 7 and 8)consists in4 providing the rim with four Opposite wings p, which givessaid rim the appearance of a Greek cross in transverse section, thespiral formation of the rim being the same as shown in figurespreviously described,and, as shown in Fig. 8, the projecting end r ofthe arm r is shaped to conform to that of the rim which it looselyembraces, thus adapting the device to operate as a shutter-worker in amanner similar to that effected by t-he preferred form for constructingthe device.

Having described my invention, I claim as new and desire to secure byLetters Patentl. A shutter-worker having a cam-head the rim of which isof circular form and twisted to produce a spiral thereon, substantiallyas set forth.

2. In a shutter-worker, a cam-head having its rim twisted in a spiralform and engaging a mating forked arm, substantially as set forth.

3. In a shutterwvorker, the combination,

with a cam-head having a twisted rim, of a forked arm which is adaptedto engage the rim of the camhead and a rocking shaft that supports andactuates the cam-head, substan-A tially as set forth.

4. The combination, with a easement and a shutter, of a shutter-Workercomposed of a rocking shaft, a cam-head thereon which has a curvedtwisted rim, and a forked arm which is adapted to engage this twistedrim and is affixed to the shutter, substantially as setforth.`

5. In a shutter-worker, the combination, with a window-easement and ahinged shutter, Of a shutter-worker having a cam-head theA semicircularflattened rimof which is given a spiral half-turn in its length, arocking shaft attached to one end of the cam-head, an adjustable knob onthe other end of the rocking shaft, and a forked arm which is affixed tothe shutter and transmits revoluble movement tok the shutter, which isreceived from the cam-head, substan tially as set forth.

EDWIN T. KEENER. Witnesses:

J. R. ROBERTSON, WILSON ROBERTSON.

